jdk/src/share/classes/sun/awt/image/IntegerComponentRaster.java
changeset 2 90ce3da70b43
child 5506 202f599c92aa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/awt/image/IntegerComponentRaster.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,692 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.awt.image;
+import java.awt.image.Raster;
+import java.awt.image.WritableRaster;
+import java.awt.image.RasterFormatException;
+import java.awt.image.SampleModel;
+import java.awt.image.SinglePixelPackedSampleModel;
+import java.awt.image.DataBuffer;
+import java.awt.image.DataBufferInt;
+import java.awt.Rectangle;
+import java.awt.Point;
+
+/**
+ * This class defines a Raster with pixels consisting of one or more 32-bit
+ * data elements stored in close proximity to each other in a integer array.
+ * The bit precision per data element is that
+ * of the data type (that is, the bit precision for this raster is 32).
+ * There is only one pixel stride and one scanline stride for all
+ * bands.  For a given pixel, all samples fit in N data elements and these
+ * N data elements hold samples for only one pixel.  This type of Raster
+ * can be used with a PackedColorModel.
+ * <p>
+ * For example, if there is only one data element per pixel, a
+ * SinglePixelPackedSampleModel can be used to represent multiple
+ * bands with a PackedColorModel (including a DirectColorModel) for
+ * color interpretation.
+ *
+ */
+public class IntegerComponentRaster extends SunWritableRaster {
+
+    static final int TYPE_CUSTOM                = 0;
+    static final int TYPE_BYTE_SAMPLES          = 1;
+    static final int TYPE_USHORT_SAMPLES        = 2;
+    static final int TYPE_INT_SAMPLES           = 3;
+    static final int TYPE_BYTE_BANDED_SAMPLES   = 4;
+    static final int TYPE_USHORT_BANDED_SAMPLES = 5;
+    static final int TYPE_INT_BANDED_SAMPLES    = 6;
+    static final int TYPE_BYTE_PACKED_SAMPLES   = 7;
+    static final int TYPE_USHORT_PACKED_SAMPLES = 8;
+    static final int TYPE_INT_PACKED_SAMPLES    = 9;
+    static final int TYPE_INT_8BIT_SAMPLES      = 10;
+    static final int TYPE_BYTE_BINARY_SAMPLES   = 11;
+
+    /** private band offset for use by native code */
+    protected int bandOffset;
+
+    /** Data offsets for each band of image data. */
+    protected int[]         dataOffsets;
+
+    /** Scanline stride of the image data contained in this Raster. */
+    protected int           scanlineStride;
+
+    /** Pixel stride of the image data contained in this Raster. */
+    protected int           pixelStride;
+
+    /** The image data array. */
+    protected int[]         data;
+
+    /** The number of data elements required to store a pixel. */
+    protected int           numDataElems;
+
+    int type;
+
+    /** A cached copy of minX + width for use in bounds checks. */
+    private int maxX;
+
+    /** A cached copy of minY + height for use in bounds checks. */
+    private int maxY;
+
+    static private native void initIDs();
+    static {
+        /* ensure that the necessary native libraries are loaded */
+        NativeLibLoader.loadLibraries();
+        initIDs();
+    }
+
+    /**
+     *  Constructs a IntegerComponentRaster with the given SampleModel.
+     *  The Raster's upper left corner is origin and it is the same
+     *  size as the SampleModel.  A DataBuffer large enough to describe the
+     *  Raster is automatically created.  SampleModel must be of type
+     *  SinglePixelPackedSampleModel.
+     *  @param sampleModel     The SampleModel that specifies the layout.
+     *  @param origin          The Point that specified the origin.
+     */
+    public IntegerComponentRaster(SampleModel sampleModel,
+                                     Point origin) {
+        this(sampleModel,
+             sampleModel.createDataBuffer(),
+             new Rectangle(origin.x,
+                           origin.y,
+                           sampleModel.getWidth(),
+                           sampleModel.getHeight()),
+             origin,
+             null);
+    }
+
+    /**
+     * Constructs a IntegerComponentRaster with the given SampleModel
+     * and DataBuffer.  The Raster's upper left corner is origin and
+     * it is the same sizes the SampleModel.  The DataBuffer is not
+     * initialized and must be a DataBufferInt compatible with SampleModel.
+     * SampleModel must be of type SinglePixelPackedSampleModel.
+     * @param sampleModel     The SampleModel that specifies the layout.
+     * @param dataBuffer      The DataBufferInt that contains the image data.
+     * @param origin          The Point that specifies the origin.
+     */
+    public IntegerComponentRaster(SampleModel sampleModel,
+                                     DataBuffer dataBuffer,
+                                     Point origin) {
+        this(sampleModel,
+             dataBuffer,
+             new Rectangle(origin.x,
+                           origin.y,
+                           sampleModel.getWidth(),
+                           sampleModel.getHeight()),
+             origin,
+             null);
+    }
+
+   /**
+     * Constructs a IntegerComponentRaster with the given SampleModel,
+     * DataBuffer, and parent.  DataBuffer must be a DataBufferInt and
+     * SampleModel must be of type SinglePixelPackedSampleModel.
+     * When translated into the base Raster's
+     * coordinate system, aRegion must be contained by the base Raster.
+     * Origin is the coodinate in the new Raster's coordinate system of
+     * the origin of the base Raster.  (The base Raster is the Raster's
+     * ancestor which has no parent.)
+     *
+     * Note that this constructor should generally be called by other
+     * constructors or create methods, it should not be used directly.
+     * @param sampleModel     The SampleModel that specifies the layout.
+     * @param dataBuffer      The DataBufferInt that contains the image data.
+     * @param aRegion         The Rectangle that specifies the image area.
+     * @param origin          The Point that specifies the origin.
+     * @param parent          The parent (if any) of this raster.
+     */
+    public IntegerComponentRaster(SampleModel sampleModel,
+                                     DataBuffer dataBuffer,
+                                     Rectangle aRegion,
+                                     Point origin,
+                                     IntegerComponentRaster parent){
+        super(sampleModel,dataBuffer,aRegion,origin,parent);
+        this.maxX = minX + width;
+        this.maxY = minY + height;
+        if (!(dataBuffer instanceof DataBufferInt)) {
+           throw new RasterFormatException("IntegerComponentRasters must have" +
+                "integer DataBuffers");
+        }
+        DataBufferInt dbi = (DataBufferInt)dataBuffer;
+        if (dbi.getNumBanks() != 1) {
+            throw new
+                RasterFormatException("DataBuffer for IntegerComponentRasters"+
+                                      " must only have 1 bank.");
+        }
+        this.data = stealData(dbi, 0);
+
+        if (sampleModel instanceof SinglePixelPackedSampleModel) {
+            SinglePixelPackedSampleModel sppsm =
+                    (SinglePixelPackedSampleModel)sampleModel;
+            int[] boffsets = sppsm.getBitOffsets();
+            boolean notByteBoundary = false;
+            for (int i=1; i < boffsets.length; i++) {
+                if ((boffsets[i]%8) != 0) {
+                    notByteBoundary = true;
+                }
+            }
+            this.type = (notByteBoundary
+                         ? IntegerComponentRaster.TYPE_INT_PACKED_SAMPLES
+                         : IntegerComponentRaster.TYPE_INT_8BIT_SAMPLES);
+
+            this.scanlineStride = sppsm.getScanlineStride();
+            this.pixelStride    = 1;
+            this.dataOffsets = new int[1];
+            this.dataOffsets[0] = dbi.getOffset();
+            this.bandOffset = this.dataOffsets[0];
+            int xOffset = aRegion.x - origin.x;
+            int yOffset = aRegion.y - origin.y;
+            dataOffsets[0] += xOffset+yOffset*scanlineStride;
+            this.numDataElems = sppsm.getNumDataElements();
+        } else {
+            throw new RasterFormatException("IntegerComponentRasters must have"+
+                                            " SinglePixelPackedSampleModel");
+        }
+
+        verify(false);
+    }
+
+
+    /**
+     * Returns a copy of the data offsets array. For each band the data offset
+     * is the index into the band's data array, of the first sample of the
+     * band.
+     */
+    public int[] getDataOffsets() {
+        return (int[]) dataOffsets.clone();
+    }
+
+    /**
+     * Returns data offset for the specified band.  The data offset
+     * is the index into the data array in which the first sample
+     * of the first scanline is stored.
+     */
+    public int getDataOffset(int band) {
+        return dataOffsets[band];
+    }
+
+
+    /**
+     * Returns the scanline stride -- the number of data array elements between
+     * a given sample and the sample in the same column of the next row.
+     */
+    public int getScanlineStride() {
+        return scanlineStride;
+    }
+
+    /**
+     * Returns pixel stride -- the number of data array elements  between two
+     * samples for the same band on the same scanline.
+     */
+    public int getPixelStride() {
+        return pixelStride;
+    }
+
+    /**
+     * Returns a reference to the data array.
+     */
+    public int[] getDataStorage() {
+        return data;
+    }
+
+    /**
+     * Returns the data elements for all bands at the specified
+     * location.
+     * An ArrayIndexOutOfBounds exception will be thrown at runtime
+     * if the pixel coordinate is out of bounds.
+     * A ClassCastException will be thrown if the input object is non null
+     * and references anything other than an array of transferType.
+     * @param x        The X coordinate of the pixel location.
+     * @param y        The Y coordinate of the pixel location.
+     * @param outData  An object reference to an array of type defined by
+     *                 getTransferType() and length getNumDataElements().
+     *                 If null an array of appropriate type and size will be
+     *                 allocated.
+     * @return         An object reference to an array of type defined by
+     *                 getTransferType() with the request pixel data.
+     */
+    public Object getDataElements(int x, int y, Object obj) {
+        if ((x < this.minX) || (y < this.minY) ||
+            (x >= this.maxX) || (y >= this.maxY)) {
+            throw new ArrayIndexOutOfBoundsException
+                ("Coordinate out of bounds!");
+        }
+        int outData[];
+        if (obj == null) {
+            outData = new int[numDataElements];
+        } else {
+            outData = (int[])obj;
+        }
+        int off = (y-minY)*scanlineStride +
+                  (x-minX)*pixelStride;
+        for (int band = 0; band < numDataElements; band++) {
+            outData[band] = data[dataOffsets[band] + off];
+        }
+
+        return outData;
+    }
+
+
+    /**
+     * Returns an array  of data elements from the specified rectangular
+     * region.
+     * An ArrayIndexOutOfBounds exception will be thrown at runtime
+     * if the pixel coordinates are out of bounds.
+     * A ClassCastException will be thrown if the input object is non null
+     * and references anything other than an array of transferType.
+     <pre>
+     *       int[] bandData = (int[])raster.getDataElements(x, y, w, h, null);
+     *       int numDataElements = raster.getNumDataElements();
+     *       int[] pixel = new int[numDataElements];
+     *       // To find a data element at location (x2, y2)
+     *       System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements,
+     *                        pixel, 0, numDataElements);
+     * </pre>
+     * @param x        The X coordinate of the upper left pixel location.
+     * @param y        The Y coordinate of the upper left pixel location.
+     * @param width    Width of the pixel rectangle.
+     * @param height   Height of the pixel rectangle.
+     * @param outData  An object reference to an array of type defined by
+     *                 getTransferType() and length w*h*getNumDataElements().
+     *                 If null an array of appropriate type and size will be
+     *                 allocated.
+     * @return         An object reference to an array of type defined by
+     *                 getTransferType() with the request pixel data.
+     */
+    public Object getDataElements(int x, int y, int w, int h, Object obj) {
+        if ((x < this.minX) || (y < this.minY) ||
+            (x + w > this.maxX) || (y + h > this.maxY)) {
+            throw new ArrayIndexOutOfBoundsException
+                ("Coordinate out of bounds!");
+        }
+        int outData[];
+        if (obj instanceof int[]) {
+            outData = (int[])obj;
+        } else {
+            outData = new int[numDataElements*w*h];
+        }
+        int yoff = (y-minY)*scanlineStride +
+                   (x-minX)*pixelStride;
+        int xoff;
+        int off = 0;
+        int xstart;
+        int ystart;
+
+        for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
+            xoff = yoff;
+            for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
+                for (int c = 0; c < numDataElements; c++) {
+                    outData[off++] = data[dataOffsets[c] + xoff];
+                }
+            }
+        }
+
+        return outData;
+    }
+
+
+    /**
+     * Stores the data elements for all bands at the specified location.
+     * An ArrayIndexOutOfBounds exception will be thrown at runtime
+     * if the pixel coordinate is out of bounds.
+     * A ClassCastException will be thrown if the input object is non null
+     * and references anything other than an array of transferType.
+     * @param x        The X coordinate of the pixel location.
+     * @param y        The Y coordinate of the pixel location.
+     * @param inData   An object reference to an array of type defined by
+     *                 getTransferType() and length getNumDataElements()
+     *                 containing the pixel data to place at x,y.
+     */
+    public void setDataElements(int x, int y, Object obj) {
+        if ((x < this.minX) || (y < this.minY) ||
+            (x >= this.maxX) || (y >= this.maxY)) {
+            throw new ArrayIndexOutOfBoundsException
+                ("Coordinate out of bounds!");
+        }
+        int inData[] = (int[])obj;
+
+        int off = (y-minY)*scanlineStride +
+                  (x-minX)*pixelStride;
+
+        for (int i = 0; i < numDataElements; i++) {
+            data[dataOffsets[i] + off] = inData[i];
+        }
+
+        markDirty();
+    }
+
+
+    /**
+     * Stores the Raster data at the specified location.
+     * The transferType of the inputRaster must match this raster.
+     * An ArrayIndexOutOfBoundsException will be thrown at runtime
+     * if the pixel coordinates are out of bounds.
+     * @param x          The X coordinate of the pixel location.
+     * @param y          The Y coordinate of the pixel location.
+     * @param inRaster   Raster of data to place at x,y location.
+     */
+    public void setDataElements(int x, int y, Raster inRaster) {
+        int dstOffX = x + inRaster.getMinX();
+        int dstOffY = y + inRaster.getMinY();
+        int width  = inRaster.getWidth();
+        int height = inRaster.getHeight();
+        if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
+            (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) {
+            throw new ArrayIndexOutOfBoundsException
+                ("Coordinate out of bounds!");
+        }
+        setDataElements(dstOffX, dstOffY, width, height, inRaster);
+    }
+
+    /**
+     * Stores the Raster data at the specified location.
+     * @param dstX The absolute X coordinate of the destination pixel
+     * that will receive a copy of the upper-left pixel of the
+     * inRaster
+     * @param dstY The absolute Y coordinate of the destination pixel
+     * that will receive a copy of the upper-left pixel of the
+     * inRaster
+     * @param width      The number of pixels to store horizontally
+     * @param height     The number of pixels to store vertically
+     * @param inRaster   Raster of data to place at x,y location.
+     */
+    private void setDataElements(int dstX, int dstY,
+                                 int width, int height,
+                                 Raster inRaster) {
+        // Assume bounds checking has been performed previously
+        if (width <= 0 || height <= 0) {
+            return;
+        }
+
+        // Write inRaster (minX, minY) to (dstX, dstY)
+
+        int srcOffX = inRaster.getMinX();
+        int srcOffY = inRaster.getMinY();
+        int tdata[] = null;
+
+        if (inRaster instanceof IntegerComponentRaster &&
+            (pixelStride == 1) && (numDataElements == 1)) {
+            IntegerComponentRaster ict = (IntegerComponentRaster) inRaster;
+            if (ict.getNumDataElements() != 1) {
+                throw new ArrayIndexOutOfBoundsException("Number of bands"+
+                                                         " does not match");
+            }
+
+            // Extract the raster parameters
+            tdata    = ict.getDataStorage();
+            int tss  = ict.getScanlineStride();
+            int toff = ict.getDataOffset(0);
+
+            int srcOffset = toff;
+
+            int dstOffset = dataOffsets[0]+(dstY-minY)*scanlineStride+
+                                           (dstX-minX);
+
+
+            // Fastest case.  We can copy scanlines
+            if (ict.getPixelStride() == pixelStride) {
+                width *= pixelStride;
+
+                // Loop through all of the scanlines and copy the data
+                for (int startY=0; startY < height; startY++) {
+                    System.arraycopy(tdata, srcOffset, data, dstOffset, width);
+                    srcOffset += tss;
+                    dstOffset += scanlineStride;
+                }
+                markDirty();
+                return;
+            }
+        }
+
+        Object odata = null;
+        for (int startY=0; startY < height; startY++) {
+            odata = inRaster.getDataElements(srcOffX, srcOffY+startY,
+                                             width, 1, odata);
+            setDataElements(dstX, dstY+startY,
+                            width, 1, odata);
+        }
+    }
+
+    /**
+     * Stores an array of data elements into the specified rectangular
+     * region.
+     * An ArrayIndexOutOfBounds exception will be thrown at runtime
+     * if the pixel coordinates are out of bounds.
+     * A ClassCastException will be thrown if the input object is non null
+     * and references anything other than an array of transferType.
+     * The data elements in the
+     * data array are assumed to be packed.  That is, a data element
+     * for the nth band at location (x2, y2) would be found at:
+     * <pre>
+     *      inData[((y2-y)*w + (x2-x))*numDataElements + n]
+     * </pre>
+     * @param x        The X coordinate of the upper left pixel location.
+     * @param y        The Y coordinate of the upper left pixel location.
+     * @param w        Width of the pixel rectangle.
+     * @param h        Height of the pixel rectangle.
+     * @param inData   An object reference to an array of type defined by
+     *                 getTransferType() and length w*h*getNumDataElements()
+     *                 containing the pixel data to place between x,y and
+     *                 x+h, y+h.
+     */
+    public void setDataElements(int x, int y, int w, int h, Object obj) {
+        if ((x < this.minX) || (y < this.minY) ||
+            (x + w > this.maxX) || (y + h > this.maxY)) {
+            throw new ArrayIndexOutOfBoundsException
+                ("Coordinate out of bounds!");
+        }
+        int inData[] = (int[])obj;
+
+        int yoff = (y-minY)*scanlineStride +
+                   (x-minX)*pixelStride;
+        int xoff;
+        int off = 0;
+        int xstart;
+        int ystart;
+
+        for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
+            xoff = yoff;
+            for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
+                for (int c = 0; c < numDataElements; c++) {
+                    data[dataOffsets[c] + xoff] = inData[off++];
+                }
+            }
+        }
+
+        markDirty();
+    }
+
+
+    /**
+     * Creates a subraster given a region of the raster.  The x and y
+     * coordinates specify the horizontal and vertical offsets
+     * from the upper-left corner of this raster to the upper-left corner
+     * of the subraster.  A subset of the bands of the parent Raster may
+     * be specified.  If this is null, then all the bands are present in the
+     * subRaster. A translation to the subRaster may also be specified.
+     * Note that the subraster will reference the same
+     * DataBuffer as the parent raster, but using different offsets.
+     * @param x               X offset.
+     * @param y               Y offset.
+     * @param width           Width (in pixels) of the subraster.
+     * @param height          Height (in pixels) of the subraster.
+     * @param x0              Translated X origin of the subraster.
+     * @param y0              Translated Y origin of the subraster.
+     * @param bandList        Array of band indices.
+     * @exception RasterFormatException
+     *            if the specified bounding box is outside of the parent raster.
+     */
+    public WritableRaster createWritableChild (int x, int y,
+                                               int width, int height,
+                                               int x0, int y0,
+                                               int bandList[]) {
+        if (x < this.minX) {
+            throw new RasterFormatException("x lies outside raster");
+        }
+        if (y < this.minY) {
+            throw new RasterFormatException("y lies outside raster");
+        }
+        if ((x+width < x) || (x+width > this.minX + this.width)) {
+            throw new RasterFormatException("(x + width) is outside raster");
+        }
+        if ((y+height < y) || (y+height > this.minY + this.height)) {
+            throw new RasterFormatException("(y + height) is outside raster");
+        }
+
+        SampleModel sm;
+
+        if (bandList != null)
+            sm = sampleModel.createSubsetSampleModel(bandList);
+        else
+            sm = sampleModel;
+
+        int deltaX = x0 - x;
+        int deltaY = y0 - y;
+
+        return new IntegerComponentRaster(sm,
+                                          dataBuffer,
+                                          new Rectangle(x0,y0,width,height),
+                                          new Point(sampleModelTranslateX+deltaX,
+                                                    sampleModelTranslateY+deltaY),
+                                          this);
+    }
+
+
+    /**
+     * Creates a subraster given a region of the raster.  The x and y
+     * coordinates specify the horizontal and vertical offsets
+     * from the upper-left corner of this raster to the upper-left corner
+     * of the subraster.  A subset of the bands of the parent raster may
+     * be specified. If this is null, then all the bands are present in the
+     * subRaster. Note that the subraster will reference the same
+     * DataBuffer as the parent raster, but using different offsets.
+     * @param x               X offset.
+     * @param y               Y offset.
+     * @param width           Width (in pixels) of the subraster.
+     * @param height          Height (in pixels) of the subraster.
+     * @param x0              Translated X origin of the subRaster.
+     * @param y0              Translated Y origin of the subRaster.
+     * @param bandList        Array of band indices.
+     * @exception RasterFormatException
+     *            if the specified bounding box is outside of the parent raster.
+     */
+    public Raster createChild (int x, int y,
+                               int width, int height,
+                               int x0, int y0,
+                               int bandList[]) {
+        return createWritableChild(x, y, width, height, x0, y0, bandList);
+    }
+
+
+    /**
+     * Creates a raster with the same band layout but using a different
+     * width and height, and with new zeroed data arrays.
+     */
+    public WritableRaster createCompatibleWritableRaster(int w, int h) {
+        if (w <= 0 || h <=0) {
+            throw new RasterFormatException("negative "+
+                                          ((w <= 0) ? "width" : "height"));
+        }
+
+        SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);
+
+        return new IntegerComponentRaster(sm, new Point(0,0));
+    }
+
+    /**
+     * Creates a raster with the same data layout and the same
+     * width and height, and with new zeroed data arrays.  If
+     * the raster is a subraster, this will call
+     * createCompatibleRaster(width, height).
+     */
+    public WritableRaster createCompatibleWritableRaster() {
+        return createCompatibleWritableRaster(width,height);
+    }
+
+    /**
+     * Verify that the layout parameters are consistent with
+     * the data.  If strictCheck
+     * is false, this method will check for ArrayIndexOutOfBounds conditions.  If
+     * strictCheck is true, this method will check for additional error
+     * conditions such as line wraparound (width of a line greater than
+     * the scanline stride).
+     * @return   String   Error string, if the layout is incompatible with
+     *                    the data.  Otherwise returns null.
+     */
+    private void verify (boolean strictCheck) {
+        if (dataOffsets[0] < 0) {
+            throw new RasterFormatException("Data offset ("+dataOffsets[0]+
+                                            ") must be >= 0");
+        }
+
+        int maxSize = 0;
+        int size;
+
+        for (int i=0; i < numDataElements; i++) {
+            size = (height-1)*scanlineStride + (width-1)*pixelStride +
+                dataOffsets[i];
+            if (size > maxSize) {
+                maxSize = size;
+            }
+        }
+        if (data.length < maxSize) {
+            throw new RasterFormatException("Data array too small (should be "+
+                                          maxSize
+                                          +" but is "+data.length+" )");
+        }
+    }
+
+    public String toString() {
+        return new String ("IntegerComponentRaster: width = "+width
+                           +" height = " + height
+                           +" #Bands = " + numBands
+                           +" #DataElements "+numDataElements
+                           +" xOff = "+sampleModelTranslateX
+                           +" yOff = "+sampleModelTranslateY
+                           +" dataOffset[0] "+dataOffsets[0]);
+    }
+
+//    /**
+//     * For debugging...  prints a region of a one-band IntegerComponentRaster
+//     */
+//    public void print(int x, int y, int w, int h) {
+//        // REMIND:  Only works for 1 band!
+//        System.out.println(this);
+//        int offset = dataOffsets[0] + y*scanlineStride + x*pixelStride;
+//        int off;
+//        for (int yoff=0; yoff < h; yoff++, offset += scanlineStride) {
+//            off = offset;
+//            System.out.print("Line "+(sampleModelTranslateY+y+yoff)+": ");
+//            for (int xoff = 0; xoff < w; xoff++, off+= pixelStride) {
+//                System.out.print(Integer.toHexString(data[off])+" ");
+//            }
+//            System.out.println("");
+//        }
+//    }
+
+}